Gelling



March 20, 1962 H. GELLING v 3,026,030

I CONTROL MECHANISM IN ADDING AND CALCULATING MACHINES Filed Nov. 18,1957 2 Sheets-Sheet 1 N VE N TOR.

H. GELLING March 20, 1962 CONTROL MECHANISM IN ADDING AND CALCULATINGMACHINES 2 Sheets-Shet 2 Filed Nov. 18, 1957 IN VE N TOP.

3,026,030 CONTROL MECHANISM IN ADDING AND CALCULATING MACHINES HelmutGelling, Ulm (Danube), Germany, assignor to Walther BuromaschinenGesellschaft m.b.H., Gerstetten, Wurttemberg, Germany, a firm Filed Nov.18, 1957, Ser. No. 697,003 Claims. (Cl. 235--79) The invention relatesto control mechanisms in adding and calculating machines for indicatingthe amounts introduced into the machines in the form of items to besummed up with machines having oscillating differential actuators. Thelatter are moved, during the first half of the cycle of operation of themachine, up to the adjusted setting means such as keys and are returned,during the second half of the cycle of operation, into their homeposition whereby the transmission of the adjusted amount to thetotalizer takes place.

Control mechanisms of this kind are mostly directly adjusted by means ofthe setting members of the machine or by means of intermediate membersconnected therewith. Upon releasing the setting members at the end ofthe cycle of operation or previous thereto also the control mechanismwill be automatically released so that after the accomplishment of thecalculation, especially with non-printing machines, the introduced valueno longer can be read ofl.

In order to eliminate this drawback and to impart further objects to thesetting control mechanism, according to the invention, the controlmechanism is adapted to be directly brought into and out of mesh withthe oscillating differential actuators cooperating with the totalizer.It is retained in mesh with the actuators during the return movement ofthem in order to be adjusted to the introduced value. The controlmechanism is released in unmeshed state during the void movement of theactuators at the beginning of the following cycle of operation so thatafter finishing of the calculation the introduced value, eg themultiplicand, besides theother .United States Patent 0 values of thecalculation, e.g. the multiplicator or the product, is indicated.

The control mechanism according to the invention is the controlmechanism is brought into mesh with the actuators, being in their zeroposition, by means of a particular setting means whereupon theindicating wheels of the control mechanism are returned to zero, theactuin the control mechanism.

Further, the invention in connection with total taking,

clearing or subtotal taking, permits to transfer the value contained inthe totalizer to the control mechanism making the value readably in thelatter, which possibility is of particular importance with non printingmachines.

Further features and objects of the invention can be gathered from thefollowing description of an embodiment of the invention.

In the accompanying drawing:

FIG. 1 shows a front view of the control mechanism.

FIG. 2 is an elevation view of the machine being in the position ofrest.

FIG. 3 is an elevation view of the machine being in a working position.

FIG. 4 shows schematically the driving mechanism of the machine.

The control'mechanism is movably mounted between rigid side walls 1 and2 (FIG-1) of the machine. Its frame 3 is crossed by'three bars or'shafts i5, 6 and,7, respectively (FIG. 2) which extend through the sideators being adjusted thereby to the value which has been walls 4 of theframe 3 and being mounted therein. The bar 7 forms the shaft of theindicating wheels 9 having indicating rollers 8 and being permanently inmesh with intermediate wheels 10 having thirty-two teeth and beingrotatably mounted on the bar 5 as shaft and adapted to be brought intoand out of engagement with the oscillating differential actuators 11(FIGS. 1 and 4) of the machine by means of upward and downward movementof the engaging mechanisms.

This movement is effected by a parallelogram linkage which consists of apair of arms 12, 13, each being secured to one of the ends of the bar 6and by means of a pair of arms 14 located above the pair 1 2, 13 eachbeing secured to one of the ends of the shaft 7. The arms 12, 13 aresecured at their outer ends to a shaft 15 (FIG. 2) rotatably mounted inthe side walls 1, 2 ('FIG. 1) of the machine, and the arms 14 aresecured with their outer ends to a shaft 16 likewise rotatably mountedin the side walls 1 and 2.

The frames formed by the shafts or bars 6, 7, 15, 16, respectively, andarms 12, 13, 14 effect, upon their rocking about the shafts 15, 16, anapproximately vertical upward and downward movement of the controlmechanisrn.

The rocking is effected by means of a downwardly extending projection 17of the arm 12 which is connected with a link 21 by means of a pin 18.The projection 17 is actuated by a tension spring 20 which tends to moveback the control mechanism into its upper disengaged position. The link21 is attached by means of a pin 22 to a connecting bar 23 pivotallyconnected by means of a pin 24 to a lever 25 which is rotatably mountedon a stationary pin 26 at the side wall 1 of the machine and can berocked clockwise by means of a key 27. A nose 28 of the link 21 coactswith a lug 29 of a drive rod 31 oscillated by the machine drivemechanism more fully described later. Besides this the projection 17carries a lug 40 which cooperates with a nose 50 of a second drive rod19 (FIGS. 1 and 4) which is likewise oscillated by the machine drivemechanism, whereby also a rocking of the control mechanism takes place.The movement of the drive rod 19, however, can take placein anotherpoint of time as by the movement of the drive rod 31.

To each of the two ends of the shaft 5 a lever 32 is secured and the twolevers 32 are connected with each other by a bar 33 and form togetherwith the shaft. 5 and the bar 33 a rocking frame. One of the two levers32 is provided with a projection 34 which is pivotally connected with aconnecting rod 36 by means of a pin 35. The connecting rod 36 is linkedby means ofa pin 37 to a crank rod 38 connected by a crank pin 39 to acrank arm 41, rotated in the direction of the arrow 42. The pin 37 isguided by means of a roller 43 mounted on it in a horizontal guidance 44provided in a frame side wall of the machine. The bar 33 as Well as thebar 6 extend through the inner spaces of the intermediate wheels 10divided into two parts by two spokes 45.

On clockwise rocking of the bar 33 all of the intermediate wheels 10 arecarried along by means of the lower spokes 45 whereby these spokes aremoved up to the bar 6. In this position the indicating wheels 9,permanently in mesh with the intermediate wheels 10, are positioned tozero. To the two ends of the shaft 7 there are secured two arms 30connected with each other by a locking rail 46 which cooperates with theintermediate wheels 10. The frame formed by the parts 30, 7, 46 is underthe action of a spring 47 which tends to draw the locking rail 46 intoengagement with the teeth gaps of the intermediate wheels 10. One of thearms 30 is provided with a downwardly extending projection locking rail46 against the action of the spring 47 out of the intermediate wheels 16after they have been locked,

in the meantime, by the engagement with the differential actuators 11against accidental displacement.

At the very beginning of the cycle of operation first a movement to theleft in the sense of the arrow 52 and later a movement in the oppositedirection is imparted to the'drive rod 31. This oscillating movement iswithout influence to the control mechanism as the nose 28 is out of thepath of the lug 29. After the movement of the drive rod 31 to the leftthe movement of the crank arm 41 follows, whereby the bar 33 is rockedclockwise and all intermediate wheels 10 are taken along until thespokes strike against the shaft 6 so that the indicating wheels 9 areadjusted to zero.

The driving means for the drive rods 19 and 31 and the engaging movementof the totalizer are shown in FIG. 4. A main drive shaft 55 (FIG. 4) isrotatably mounted in the machine frame and has fixed to it an arm 56 andtwo cams 57, 58. Arm 56 has fixedthereto a pin engaging a cross slot 60of a drive rod 61 to the right hand end of which and to the similardrive rod at theother side of the machine is fixed a restoring bar 54which extends through slots of the differential aoctuators 11, which areurged by springs 64 to the left and being restored to their homeposition, represented in FIG. 4, by the back movement of said restoringbar 54.

The different actuators are guided by four-edged bars extending throughslots of the actuators.

The totalizer wheels 63 are rotatably mounted on a shaft 62. The shaft62 is supported by two bell crank levers 65 which are pivotally mountedon stationary'pins 66, said bell crank levers 65 are linked at theirupper ends by pins 67 to links'68 pivotally mounted on stationary pins69.

On the connecting pins 67 pawls 71,7'2 are fulcrumed which cooperatewith pins 74, 75 of the drive rods 19, 31 which are guided at theirright hand ends by stationary pins engaging slots 76.

At the left hand end the drive rods 31, 19 each carry antifrictionrollers 78 and 77, which cooperate with the earns 57 or 58,respectively, in such a way that the drive rods perform oscillatingmovement on each revolution of the main shaft 55 in a differently timedmanner. To each pawl 71, 72 an operation key 73 is associated bydepressing of one of which the drive rod 19 or 31, respectively, iscoupled with the pin 74 or 75. The pins 67, the links 68 and bell cranklevers 65 form toggle joints, and on moving the pins 67 to the left bymeans of the cams 57 or 58, respectively, the totalizer wheels 63 willbe moved downwardly in mesh with the differential actuators 11.

moved 'set pin carriage .84, the set pins of which being setby digitalkeys 85 in a known manner.

The described mechanism operates as follows: 7 (a) Introducing of anadding item or another value of mesh with the differential actuators lland the indie eating wheels are adjusted to zero or assume an amountposition coming from the preceding cycle of operation. The nose 23 isout of the path of the lug 29 and the crank pin 39 assumes its righthand dead center position, so that the bar 33 is in its uppermostposition.

After the amount to be added has been introduced into .jection 17, thenose 51 strikes the lug 49 and lifts the the amount keys and the setpins have been accordingly adjusted and the pawl 71 is coupled with the,drive rod 1 by depressing the associated key 73 the cycle of operationis started. The movement of the drive rod 31 which begins immediately atthe beginning of the cycle of operation is without effect with respecttothe projection 17 (FIG. 2). Then, by moving the restoring bar 54 tothe left the void movement of the actuators 11 in the direction of thearrow 53 (FIG. 2) follows, during which the actuators move under theaction of their tension springs 64 up to the adjusted set pins of theset pin carriage. During the same space of time the crank arm 41 rocksthe bar 33 clockwise and positions the indicating wheels to zero. Thenthe drive rod 19 begins its movement and rocks clockwise the projection17 by means of the nose 50 (FIG. 2) and the lug 40, whereby the controlmechanism is engaged into the actuators 11 (FIG. 3); a the same time thetotalizer will be brought into mesh with the actuators by means of thedrive rod 19. Now the actuators 11 are again restored into theirhome'position in a direction opposite the sense of the V arrow 52 bymeans of their restoring bar 54, whereby the amount to which theactuators have been adjusted is transmitted to the intermediate wheels10 and the indicating wheels 9, so that the indicating cipher rollsindicate the introduced value. During restoring of the differentialactuators also the introduced amount is added to the totalizer wheels63.

During the downward movement of the control mechanism the locking rail46 has been lifted out of the intermediate w'heels 10 by means of thenose 51 and the lug 49. Simultaneously with the restoring of theactuators 11 further turning of the crank arm 41 effects the returnrocking of the bar 33 into its home position. At the end of the cycle ofoperation the control mechanism is again brought out of mesh with theactuators whereby the intermediate wheels 10 and the indicating wheels 9are locked again by means of the locking rail 46. During the position ofrest of the machine the control mechanism therefore shows the valueintroduced during the preceding cycle of operation while, in the case ofa multiplication or division, the multiplicand or dividend is shown byanother-indicating mechanism of the machine and the new total appears inthe totalizer.

is finished.

(b)'Total taking.ln total taking cycles of operation a storing mechanismor from an auxiliary totalizer not equipped with indicating rolls orotherwise to store a value contained in the totalizer and to render itreadable after the finishing of the cycle of operation. This can beeffected without any further means by the described control mechanism. Va

On total taking the totalizer which has been connected with the drivebar 31jby means of the pawl 72 will be brought into mesh with theactuators already at the beginning of the cycle of operation-and theactuators are,

'underthe action of their springs, moved back until the wheels of thetotalizer arestopped into their zero posie amount 'into'fite'machine.-Inthe position of rest of r in FIG. 2 in. which the intermediate wheels 10are out 1 the machine the parts assume the position represented tion.This is effected by coupling the pawl '72 (FIG. 4) with the drive rod 31by depressing the associated key 73, whereby the totalizer wheels 63 areengaged and disengaged into and out of the diiferentialactuators in duetime. In this manner, the amount which is contained in'the totalizer 63will be transmitted to the actuators 11. described above, theintermediate wheels 16 remain,

The calculation values can be read off when the cycle of operationduring the void movement of the actuators 11 to the left out of meshwith the actuators and are brought into mesh with them by means of thedrive rod 19 short before the actuators 11 begin their return movementtowards the right into the Zero position. Upon this return movementtherefore the total-values or the like taken up from the actuators aretransmitted to the intermediate wheels and therewith also to theindicating cipher rolls 8, so that they indicate the related totalizervalues or the like during the following position of rest of the machine.

'(0) Transmitting back-The described control mechanism can also be usedfor re-transmitting an amount coming from the preceding cycle ofoperation into the diiferential actuators in order to use it in .anymanner. To this end it is only necessary to depress the key 27 (FIG. 3)previous to the beginning of the cycle of operation. Thereby the nose 28will be adjusted into the path of the lug 29 of the drive rod 31 so thatimmediately after the beginning of the cycle of operation the lug 29rocks clockwise the arm 17 thereby bringing the control mechanism intoengagement with the actuators 11. The totalizer remains out of mesh withthe actuators 11.

By the subsequent clockwise rocking of the bar 33 the rotation of theintermediate wheels 10 and the indicating rollers 9 into their zeroposition takes place which is assisted by the action of the spring ofthe actuators and whereby the amount which has been contained in thecipher rolls is transmitted to the actuators and then, before the returnmovement of the actuators 11 into the zero position, the totalizer orthe like is engaged into the actuators, this amount is transferred tothe totalizer by the return movement of the actuators.

What I claim is:

1. In a calculating machine of the class described, a totalizerconsisting of a series of totalizer wheels, differential actuatorscooperating therewith and performing, during each cycle of operation, aforward movement and a return movement, totalizer engaging means forholding said totalizer in or out of mesh with said actuators, a controlmechanism comprising a set of denominationally arranged intermediatewheels each having an indicating roller associated therewith, means fordirectly engaging and disengaging said intermediate wheels with saidactuators, means for holding said intermediate wheels in mesh with saidactuators during the return stroke of the actuators and the timefollowing thereof until beginning of the next cycle of operation of themachine, and for holding unmeshed said intermediate wheels with saidactuators during the forward movement of the actuators, a drivemechanism, a zeroising means for said control mechanism, and connectingmeans between said drive mechanism and said zeroising means for drivingthe latter at the beginning of each cycle of operation of the machine,whereby individual entries, totals, and subtotals may be introduced intosaid control mechanism and indicated thereby following a cycle ofoperation.

2. In a calculating machine according to claim 1, a special manualoperated means, operative connections 6 between it and said controlmechanism for bringing the control mechanism into mesh with saidactuators at the very beginning of a cycle of operation.

3. in a calculating machine according to claim 1, said engaging meansfor said intermediate wheels comprising a parallelogram linkage, a linkpivotally connected at its one end with said linkage, a nose integralwith said link, said totalizer engaging mechanism comprising a drive rodadapted for controlling total taking of the totalizer and movable in onedirection at the very beginning of each cycle of operation, a lug onsaid drive rod cooperating with said nose, a special key, operativeconnecting means between it and the other end of said link, whereby upondepressing of said special key said link is moved with its nose into thepath of said lug'and upon the movement of said drive rod theintermediate wheels are engaged with the actuators, whereby thezeroizing of the intermediate wheels is eifected and the amountcontained in the intermediate wheels is transmitted to said actuators.

I integrally mounted in the control mechanism, a movable bar, these twobars extending through the inner spaces of said intermediate wheels,spokes at said intermediate wheels cooperating with said integral andsaid movable bars, means for rocking said movable bar about the axis ofthe intermediate wheels comprising a crank gear for effecting anoscillating movement of the movable bar, whereby at the very beginningof the cycle of operation the movable bar displaces the intermediatewheels by means of said spokes until the spokes strike against theintegral bar and the movable bar is subsequently returned by said crankgear freeing said intermediate wheels.

5. In a calculating machine according to claim 1, a locking railcooperating with said intermediate wheels, an axle rotatably mountingsaid indicating rollers and rockably mounting said locking rail, a lugrigidly connected with said locking rail, said engaging means for saidintermediate wheels comprising a rocking lever having a nose cooperatingwith said lug, whereby on rocking the rocking lever for engaging theintermediate wheels into said actuators said nose strikes against saidlug lifting said locking rail out of said intermediate wheels, while onrocking the rocking lever in opposite direction for unmeshing saidintermediate wheels said nose releases said lug permitting the lockingrail to engage into said intermediate wheels.

References Cited in the file of this patent UNITED STATES PATENTS1,246,087 Gooch Nov. 13, 1917 1,816,263 Robertson July 28, 19312,119,841 Breitling June 7, 1938 FOREIGN PATENTS 497,833 Great BritainDec. 28, 1938

